Well, if you listen to the Vintage Airstream Podcast, Colin has talked about his kit. I'm not positive if it's in production yet, so you'll have to call him to find out. It's aluminum & has the pieces cut to size. Probably looks like the one in your link, but all cut for you. That's all the info I have (and no, I don't work for Colin!)
This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.